Primate multidien enamel rhythms and body size.

<p>Multidien rhythms measured from the enamel of numerous primates are regressed against body size (Kg). This association was our first indication that some systemic physiological event linked to development perturbed the enamel forming cells, altering their matrix production and manifesting a periodic growth line [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0145919#pone.0145919.ref011" target="_blank">11</a>]. Lemur outliers have been isolated from other primates on Madagascar for 31 million years, and evolved their limited multidien variability and life history strategy to cope with island ecological instability [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0145919#pone.0145919.ref012" target="_blank">12</a>]. Fig 2 is modified from an earlier publication [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0145919#pone.0145919.ref010" target="_blank">10</a>]. The following statement is a PLOS requirement: "Tim Bromage pictured in Fig 2 and representing "human", has given written informed consent to himself to publish this image". Closed circles = New World monkeys; Open squares = Old World monkeys, apes; Open triangles = lemurs.